*/
  @SuppressWarnings("unchecked")
  static <C extends Comparable> Cut<C> aboveAll() {
    return (Cut<C>) AboveAll.INSTANCE;
  }

  private static final class AboveAll extends Cut<Comparable<?>> {
    private static final AboveAll INSTANCE = new AboveAll();

    private AboveAll() {
      // For discussion of "", see BelowAll.
      super("");
    }

    @Override

            nextComplementRangeLowerBound = positiveRange.upperBound;
          } else {
            negativeRange = Range.create(nextComplementRangeLowerBound, Cut.aboveAll());
            nextComplementRangeLowerBound = Cut.aboveAll();
          }
          return immutableEntry(negativeRange.lowerBound, negativeRange);
        }
      };
    }

    @Override

      } else {
        lowerBound = ranges.get(index).upperBound;
      }

      Cut<C> upperBound;
      if (positiveBoundedAbove && index == size - 1) {
        upperBound = Cut.aboveAll();
      } else {
        upperBound = ranges.get(index + (positiveBoundedBelow ? 0 : 1)).lowerBound;
      }

      return Range.create(lowerBound, upperBound);
    }

    @Override